Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5665480 | Copper-lead alloy bearing | Tadashi Tanaka, Masaaki Sakamoto, Koichi Yamamoto | 1997-09-09 |
| 5666644 | Multilayered end bearing | Tadashi Tanaka, Masaaki Sakamoto, Koichi Yamamoto, Kouki Ozaki | 1997-09-09 |